Tread portion of an automobile tire



FIG. 1 is a perspective view of the tread portion of an automobile tireshowing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a partial front view of the tread shown enlarged for clarityof illustration;

FIG. 6 is a sectional view taken in the direction defined by line 6-6 inFIG. 5; and,

FIG. 7 is a sectional view taken in the direction defined by line 7-7 inFIG. 5.

The broken lines illustrate portions of the sidewall, bead, and interiorsurface of a tire, and form no part of the claimed design.

CLAIM The ornamental design for a tread portion of an automobile tire,as shown and described.